### The Maxima on-line user's manual

Algebra Calculator

#### Concat

Function: concat (<arg_1>, <arg_2>, ...) Concatenates its arguments. The arguments must evaluate to atoms. The return value is a symbol if the first argument is a symbol and a string otherwise.

`concat` evaluates its arguments. The single quote prevents evaluation.

```          (%i1) y: 7\$
(%i2) z: 88\$
(%i3) concat (y, z/2);
(%o3)                          744
(%i4) concat (y, z/2);
(%o4)                          y44```

A symbol constructed by `concat` may be assigned a value and appear in expressions. The `::` (double colon) assignment operator evaluates its left-hand side.

```          (%i5) a: concat (y, z/2);
(%o5)                          y44
(%i6) a:: 123;
(%o6)                          123
(%i7) y44;
(%o7)                          123
(%i8) b^a;
y44
(%o8)                         b
(%i9) %, numer;
123
(%o9)                         b```

Note that although `concat (1, 2)` looks like a number, it is a string.

```          (%i10) concat (1, 2) + 3;
(%o10)                       12 + 3```

There are also some inexact matches for `concat`. Try `?? concat` to see them.

```(%o1)                                true
(%i2) ```

### Related Examples

##### concat-floor-makelist-numer-string

Aufgabe1:[Ko=1000,p=3...

Aufgabe2:[Ko=2000,p=2...

Aufgabe3:[Ko=3000,P=2...

Calculate

##### concat-expand-sconcat

sconcat ("xx[", 3, "]...

Calculate

##### concat-makelist

n:8;

makelist(concat(x,i),...

Calculate

##### concat-print-random

base : 2;

if base = 1 or base =...

if base = 1 and base2...

Calculate

##### concat-cos-draw-explicit-plot2d-sin

p(t):=cos(20*t);

s(t):=0.7*sin(3*t)+0....

k:0.5;

Calculate

##### concat-erf-log-numer-sqrt-true

numer:true;

ld(x):=log(x)/log(2);

log10(x):=log(x)/log(...

Calculate

##### concat-floor-numer

Aufgabe1:[Ko=1000,p=3...

Aufgabe2:[Ko=2000,p=2...

Aufgabe3:[Ko=3000,P=2...

Calculate

k:2;

n:1;

Calculate

##### concat-length-random

liste:["+","-","/","*...

a(x):="x"+liste[rando...

a(2);

Calculate

##### concat-max-min-print-random-round

/* calculem el mes */...

min : 1;

/* Definim el minim*...

Calculate